Envelop.



L. M. DODDRIDGE.

ENVELOP.

APPLICATIQN FILED MAR. 29. 1915.

1,142,942.; Patented June 15, .1915.

' lvwmboz LoYm. M Dooomoel:

. I I I 3513 atto'znug THE NORRIS PETERS c0, PHOTG-LITHO., WASHINGTON,D. C,

LOYAL M. DODDRIDGE, OF STANTON, MICHIGAN.

ENVELOP.

Specification of Letters Patent.

Patented June 15, 1915.

Application filed March 29, 1915. Serial No. 17,901.

To all whom it may concern Be it known that I, LOYAL M. Doonnmen, acitizen of the United States, residing at Stanton, in the county ofMontcalm and State of Michigan, have invented certain new and usefulImprovements in Envelops, of which the following is a specification,reference being had to the accompanying drawings.

The present invention relates to new and useful improvements in envelopsand as its principal object aims to provide a device of this characterwhich is extremely simple in construction and may, therefore, be cheaplymanufactured.

A further object is to provide an envelop in which the film of adhesivematerial is applied to an inner flap carried by the back of the envelopso that it will be possible to wet the closure flap when the envelop isto be sealed, without requiring that the adhesive material itself bepassed over the moistening element.

The above, and other incidental objects of a similar nature, which willbe hereinafter more specifically treated are accomplished by such meansas are illustrated in the accompanying drawings, described in thefollowing specification, and then more particularly pointed out in theclaims which are appended hereto and form part of this application.

l/Vith reference to the drawings, wherein there has been illustrated thepreferred embodiment of this invention, as it is reduced to practice,and throughout the several views of which similar reference numeralsdesignate corresponding parts, Figure 1 is a plan view of the back ofthe envelop in solid lines, the blank from which the envelop is formed,being indicated in dotted lines; and Fig. 2 is a plan view of the flapsealing strip and the connecting strips of the back wall section,showing them in the relation which they assume when applied to the backwall of the envelop.

The envelop of the present invention is formed from a single blankdesignated as an entirety by the letter A. This blank includes a backpiece 10, a front piece 11, a closure flap 12 and the terminalextensions 13 which, when the blank is properly folded,

constitute a portion of the back. The back 10 is irregular in shape, itsouter edge being curved, as indicated at 14 and its end edges, indicatedat 15, being outwardly convergent and diagonal with respect to themember 11. The outer edges 16 of the extensions 13 are diagonal andextend parallel to the edges 15. The end edges 17 of the extensions 13are curved on a radius corresponding to the radius of the curved edge 1%of the back, so that they will form continuations of this edge when theblank is folded in the manner shown in Fig. 1. figure, it will be seenthat the back piece 10 and front piece 11 are folded on the crease lineBB to dispose the back piece against the front piece. The terminalextensions 13 are then folded on the crease line (3-0 and are thusdisposed so that their outer edges 16 matewith the edges 15 of themember 10 on a line which extends diagonally with respect to the loweredge of the envelop. After the blank has been thus shaped, a pair ofsealing strips, indicated at 18 are applied to the inner face of theback piece to connect this member with the extension 13. The sealingstrip 19 is then applied to the vinner face of the back piece, at thecurved edge thereof. This sealing strip 19 is longitudinally curved, toconform to the curved edge 14 and is disposed with its outer edgeportion lying on the edge 14 so that the flap 12 may be folded, andafter being properly moistened, engaged with the sealing strip to 'closethe envelop. 1

I desire to direct particular attention to the fact that in the presentenvelop, the strip 19 which carries the adhesive material for sealingthe envelop, need not be moistened and that the flap 12 which is notprovided with any adhesive material, is the element which may bemoistened. The particular advantage in this construction is that whenthe flaps are moistened for sealing, there is no mucilage to come offthe flap and deposit on the sponge or other moistening element employed.

While I have shown the members 18 and 19 as being separately formed andhave so described them, I desire it understood that they may be cut froma single blank of material.

, In reduction to practice, it has been found that the form of thisinvention illustrated in the drawings, and referred to in the abovedescription as the preferred embodiment is the most efficient andpractical; yet realizing that the conditions concurrent with theadoption of this device will necessarily vary, it is desirable toemphasize the fact that Upon reference to this.

various minor changes in the details of construction, proportion andarrangement of parts may be resorted to, when required, withoutsacrificing any of the advantages of this invention, as defined by theappended claims.

What is claimed is 1. An envelop including a rectangular front piece, anirregular back piece of less length than the front piece, terminalextensions formed on the front piece, said eX- tensions being disposedto mate with the back piece to form in connection therewith the backwall of the envelop, a sealing strip connecting the back piece andextensions, a flap formed on the front piece, and a sealing stripcarried by the back piece andon the inner face thereof for sealing theflap, said sealing strip being longitudinally curved and having itsouter edge portion lying beyond the adjacent edge of the back piece,whereby the edge of the flap may mate therewith.

2. An envelop including a rectangular front piece, an irregular backpiece of less length than the front piece, terminal extensions formed onthe front piece, said eXtensions being disposed to mate with the backpiece to form in connection therewith the back wall of the envelop, theadjacent edges of the back piece and extensions being disposed to abut,sealing strips disposed within the envelop to connect the back piece andextensions, and a closure flap formed on the front piece.

In testimony whereof I hereunto affix my signature in the presence oftwo Witnesses.

LOYAL M. DODDRIDGE.

"Witnesses WILLIAM: S. FRENCH, CLYDE H. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Fatents, Washington, D. G.

